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ependyma
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  室管膜
     Conclusion The ependyma/SVZ cells can be labeled by Dil 24-48 h after injection(10 μL of 2 g/L) into the lateral ventricle.
     结论2 g/L的D iI 10μL注射于正常大鼠侧脑室后24~48 h,可能仅标记室管膜/室下区细胞。
短句来源
     Immunohistochemical study of the localization of IFN- γ in the ependyma of the rat
     应用免疫组织化学法研究γ-干扰素在大鼠室管膜中的定位分布
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     Results In the non-ischemic control rats, DiI-labeled cells resided in the ependyma/subventricular zone.
     结果在非缺血对照大鼠,DiI标记细胞定居于室管膜/室下区。
短句来源
     The thickness of the tissue with DiI fluorescence in the left ependyma/septal subventricular zone(SVZspt) and ependyma/postnatal equivalent of the ganglionic eminences(SVZge) remained unchanged at 12 h and 24 h after DiI injection. The thickness of the tissue with DiI fluorescence in the left ependyma/SVZge was significantly greater than that in the ependyma/SVZspt at all of the time points(P<0.05).
     此外,左侧室管膜/中隔室下区(SVZspt)和室管膜/神经节隆起的生后对应物(SVZge)部位荧光标记组织的厚度分别在D iI注射12 h和24 h后维持于稳定水平,而且,在相应各时间点上,室管膜/SVZge部位荧光标记组织的厚度都厚于室管膜/SVZspt部位(P<0.05)。
短句来源
     Experimental study on in vitro inducement differentiation of neural stem cells from fetal rat ependyma
     胚鼠室管膜神经干细胞体外诱导分化实验研究
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  “ependyma”译为未确定词的双语例句
     Results The number of BrdU-positive cells in the ependyma of central canal of spinal cord in the experiment group(45.67±3.62)was higher than that in the control group(29.91±3.68).
     结果损伤用药组大鼠脊髓室管膜细胞 BrdU 阳性染色数量[(45.67±3.62)个]高于损伤不用药组[(29.91±3.68)个]。
短句来源
     Results The pathological diagnoses of these 15 cases of cauda equina tumor revealed that there were 8 cases of neurofribroma,3 cases of dermoid cyst and epidermoid cyst,2 cases of lipoma,1 case of ependyma tumor and 1 case of metastasis.
     结果病理诊断15例马尾肿瘤中,神经纤维瘤8例,皮样囊肿和表皮样囊肿3例,脂肪瘤2例,室管膜瘤1例,转移瘤1例。
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     Results Compared with the sham operation group,β-tubulin was significantly increased in the MCAO on the 7,14 and 21 day(P<0.05). Fluorescence intensity of BrdU+β-tubulin significantly increased in ependyma and subependymal region.
     结果β-Tubulin阳性细胞随缺血/再灌注时间的延长,荧光强度值增加,第7天、第14天、第21天组与假手术组比较,差异具有显著性(P<0.05)。
短句来源
     THE EFFERENT CONNECTIONS TO EPENDYMA FROM VENTRAL DIENCEPHALON IN THE RAT——PHA-L METHOD STUDY
     大鼠腹侧间脑至室管膜的传出联系——PHA-L法研究
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     (2)VD group: The quantities of cilia and microvilli on the uneven surface of ependyma were reduced obviously.
     (2)VD模型组:纤毛和微绒毛均明显减少,且室管膜细胞表面凹凸不平。
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  相似匹配句对
     ULTRASTRUCTURE OF THE EPENDYMA OF THE THIRD CEREBRAL VENTRICLE IN RAT
     大白鼠第三脑室室管膜的超微结构
短句来源
     ⑤Disseminated along pia mater and ependyma.
     ⑤可侵犯室管膜和软脑膜并沿之播散 ;
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  ependyma
The membrane-bound Cp is expressed in glial cells of all types and in ependyma cells.
      
It is suggested that either a sensitizer or a challenger may enter the periventricular tissue via the ependyma.
      
The tanycytes of the ependyma of the third cerebral ventricle pass longitudinally through the various zones of the median eminence and reach at pericapillary space of the portal vessels.
      
Following exposure to 550 μg Hg/m3 for 12 h mercury was additionally detected in the ependyma.
      
Specific [3H]-RO 5-4864 binding sites were observed in the choroid plexus and ependyma cells within the brain.
      
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The present paper embodies a comprehensive investigation of all tissues of the tadpole tail of Kaloula borealis and their degeneration during metamorphosis. The following are the important findings.The structural characteristics of the tailThe tadpole tail of Anura is a temporary organ functioning in its embryonic aquatic life. In this ephemeral organ a number of primitive characters are retained. For example, the epidermis consists of only two layers of cells. A cuticula is present on the superficial layer....

The present paper embodies a comprehensive investigation of all tissues of the tadpole tail of Kaloula borealis and their degeneration during metamorphosis. The following are the important findings.The structural characteristics of the tailThe tadpole tail of Anura is a temporary organ functioning in its embryonic aquatic life. In this ephemeral organ a number of primitive characters are retained. For example, the epidermis consists of only two layers of cells. A cuticula is present on the superficial layer. Its cells can multiply by division. The dermis is extremely thin and consists of fibers only. Muscles exist in the form of myotomes,in which many young myofibers are retained. The connective tissue matrix is not completely differentiated and looks similar to the mesenchyme. These primitive conditions are also present in the trunk portion of the young tadpole, but at a later stage the above mentioned structures gradually assume aspects obtaining in the young frog. The tail however, retains these primitive conditions unaltered to the very end. In the metamorphosis it undergoes regressive degeneration.Maintenance of unity by the tail in degenerationIn the course of degeneration, activities are concerted. An axial gradient is manifest. Degeneration activity is most pronounced at the tip of the tail, less in the middle portion and least at the base. As a result, the tip quickly vanished, the other parts follow in an orderly sequence. Finally the whole organ disappears.The rate of degeneration of various tissues also varies. Epidermis and notochord lag behind. In order to accommondate themselves in the shrinking space the epidermal cells pile on top of each other, and the epidermis thus becomes multilayered and the notochord becomes undulated. The modifications are in accord with the role these tissues play.The general rule of the degeneration of the tail tissueIn a given tissue, elements that are advanced in differentiation also lead in degeneration. E. g. muscle fiber in myqtome, vacuolar cell in notochord, ganglion cell in spinal ganglion. The less differentiated elements lag behind, e. g. endomysium, noto-chordal epithelium and amphicyte.In degeneration, all fibral tissues including connective tissue-, nerve- and muscle fibers, become swollen and losening up, and gradually become dissolved. Cytoplasm of all cells lose their tight and compact nature and takes deeper stain with eosin. Hereafter vacuoles and pigment granules often appear in it. Unless compressed, the nuclei keep their shape but lose their contents. Degenerating epidermal cells of superficial layer undergo keratinization and finally are cast off. Cells of basal layer first fragment and then vanish.The nucleoli show greater persistence. This is especially pronounced in the nucleoli of ganglion cells and muscle fibers.Pigment granules are slow to disintegrate. They frequently collect in masses, and the tail become black during metamorphosis.Mitosis and amitosisAmitosis occurs in both layers of the epidermal cells, in the nuclei of muscle fibers and in the large cells of the connective tissue matrix. In the formative period of muscle fibers, multiplication of nuclei is soly by means of mitosis. At the end of differentiation mitosis ceases. Hereafter multiplication of nuclei is soly by means of amitosis. In their upgrade development, epidermal cells and the large cells of connective tissue matrix too, cells multiply by means of mitosis. But at the completion of differentiation amitosis makes its appearance and goes on side by side until metamorphosis.Before beginning of metamorphosis, all kinds of the cells in the tail tissue cease to multiply. Only the cells of ependyma and wandering cells of the connective tissue matrix mitosis goes on as usual during degeneration.The significance of mitosis and amitosis is discussed.Degeneration and developmentIn the development of the embryo, there is growth and differentiation of cells and tissues, but coupled with it, there is senescence and death. These two phases of life contradict and yet complement each other. This i

本工作较全面地观察了北方狭口蛙成长期蝌蚪尾组织的显微结构及在变态期的退化,主要的结果简述如下。 1.成长期表皮两层细胞都进行无丝及有丝分裂,无丝分裂出现比有丝分裂晚,出现时表皮细胞郎有生理的退化。 表皮退化时由两层改组为多层,表面细胞角质化,组成一到二层角质层,角质细胞不断脱落。基层细胞核固缩,破裂成碎块;细胞质收缩,与膜脱离,破裂成碎块,与核一同消失。 内膜与肌纤维的连接是肌内膜的原纤维伸入肌原生质中与之紧密连接。 绝大多数肌纤维退化时肌原纤维断裂成肌解小体,以后溶解;少数不断裂成肌解小体,直接溶解。 3.脊索退化时泡细胞先退化,脊索上皮稍后,脊索鞘最后。泡细胞先失去液体,细胞膜膨胀加厚,与细胞质脱离,以后共同溶解。脊索鞘纤维膨胀,松散,然后溶解。 4.神经细胞退化时所合成分渐次溶解,但核仁耐力大,在退化的神经节细胞中有时其他成分已经溶解但核仁仍在。神经纤维膨胀,松散,溶解。 5.侧线的感觉蕾退化时与支配它的神经纤维首先失去连接,向表皮表面移位,细胞溶解,残留的少数细胞随表皮角质细胞脱落。 6.血管与淋巴管壁都很薄,退化时由于纤维膨胀,譬加厚,结构才显得清楚。纤维膨胀,松散,与细胞一同溶解。 7.结缔组织基...

本工作较全面地观察了北方狭口蛙成长期蝌蚪尾组织的显微结构及在变态期的退化,主要的结果简述如下。 1.成长期表皮两层细胞都进行无丝及有丝分裂,无丝分裂出现比有丝分裂晚,出现时表皮细胞郎有生理的退化。 表皮退化时由两层改组为多层,表面细胞角质化,组成一到二层角质层,角质细胞不断脱落。基层细胞核固缩,破裂成碎块;细胞质收缩,与膜脱离,破裂成碎块,与核一同消失。 内膜与肌纤维的连接是肌内膜的原纤维伸入肌原生质中与之紧密连接。 绝大多数肌纤维退化时肌原纤维断裂成肌解小体,以后溶解;少数不断裂成肌解小体,直接溶解。 3.脊索退化时泡细胞先退化,脊索上皮稍后,脊索鞘最后。泡细胞先失去液体,细胞膜膨胀加厚,与细胞质脱离,以后共同溶解。脊索鞘纤维膨胀,松散,然后溶解。 4.神经细胞退化时所合成分渐次溶解,但核仁耐力大,在退化的神经节细胞中有时其他成分已经溶解但核仁仍在。神经纤维膨胀,松散,溶解。 5.侧线的感觉蕾退化时与支配它的神经纤维首先失去连接,向表皮表面移位,细胞溶解,残留的少数细胞随表皮角质细胞脱落。 6.血管与淋巴管壁都很薄,退化时由于纤维膨胀,譬加厚,结构才显得清楚。纤维膨胀,松散,与细胞一同溶解。 7.结缔组织基质合纤维与三种细胞:小型细胞,大型细胞及游走细胞。后两?

Observation on the ultrastructure of ependyma in the central canal of 12 rat spinal cords by means of transmission and scanning electron microscope showed that the ependyma is composed of ependymal cells, tanycytes and neurons. The ependymal cells are columnar or cubic in shape. Their apical surfaces are provided with microvilli and cilia which may contact with Reissner's fiber. Neighbouring cells are connected by zonula adherens or zonula occludens. The cytoplasm contains numerous mitochondria and...

Observation on the ultrastructure of ependyma in the central canal of 12 rat spinal cords by means of transmission and scanning electron microscope showed that the ependyma is composed of ependymal cells, tanycytes and neurons. The ependymal cells are columnar or cubic in shape. Their apical surfaces are provided with microvilli and cilia which may contact with Reissner's fiber. Neighbouring cells are connected by zonula adherens or zonula occludens. The cytoplasm contains numerous mitochondria and vesicles. Elongated tanycytes situate between ependymal cells. They are provided with microvilli (but no cilia) at apical surfaces. The basal processes thrust into the grey matter, where they inclose capillaries. Abundant microfilaments and microtubes are embedded in the cytoplasm. This paper reports the cerebrospinal fluid-contacting neurons existing in the ependyma of rat spinal cord for the first time. These belong to supraependymal or hypoendymal neurons with small, multipolarcell bodies. Their dendrites and axons could be found in the lumen of central canal. Occasionally, the contact between axon terminal and dendrite was encountered. Morphological evidence mentioned above suggests that ependyma may perform receptive, absorptive and secretory function.

本文通过对12只大白鼠脊髓中央管室管膜的透射电镜和扫描电镜观察表明:室管膜主要由室管膜细胞、伸张细胞和神经细胞组成。室管膜细胞为柱状或立方状,表面有纤毛和微绒毛,纤毛可与Reissner氏纤维接触。室管膜细胞之间借粘着小带和闭锁小带连接,胞浆内有丰富的线粒体及泡状结构。伸张细胞胞体细长,嵌于室管膜细胞之间,其顶部有微绒毛,但无纤毛;底部发出基突伸向灰质并靠近毛细血管;胞浆内有丰富的微丝和微管。本文报告大白鼠脊髓中央管的室管膜含有接触脑脊髓液的神经元,它们属于室管膜上或室管膜下型,为小型多极神经元,其树突和轴突均可见于中央管腔内,偶尔可见神经纤维的末梢与“触液”树突接触。上述资料提示室管膜可能具有感受、吸收、分泌和调整的功能,并为神经一体液调节的途径提供了新的形态学依据。

The supraependymal neuron-like cells, neuroglia-like cells and Mstocyte-like cells have been identified in the third cerebral ventricle of adult albino rats by scanning and transmission electron microscopy. The neuron-like cells are multipolar or bipolar in shape with smooth surface and remarkable axon, situating in the cilia-less or noncilia area of the lateral wall and floor of the third ventricle. The neuroglia-like cells and histocyte-like cells are numerous, situating in the cilia area of the lateral wall...

The supraependymal neuron-like cells, neuroglia-like cells and Mstocyte-like cells have been identified in the third cerebral ventricle of adult albino rats by scanning and transmission electron microscopy. The neuron-like cells are multipolar or bipolar in shape with smooth surface and remarkable axon, situating in the cilia-less or noncilia area of the lateral wall and floor of the third ventricle. The neuroglia-like cells and histocyte-like cells are numerous, situating in the cilia area of the lateral wall of the third ventricle. The former are polygonal in shape with short and thick processes, showing no polarity; the latter are spheric with microvilli and vesicle-like structures on the surface. The nerve fibers come from, the supraependymal neuron-like cells or the neurons outside the ventricle. They travel parallel to the surface of the ventricular wall alone or interweave with others. Their terminals, whJich closely contact the cytoplasmic membrane of the ependymal cells, contain small clear vesicles or mixed small clear and large granular vesicles. The CSF-contacting dendritic terminals situating on the lateral wall of the third ventricle show spheric enlargement with ruffled surface. Many smooth spheric bodies of the ependymal cells distribute sparsely on the floor of the third ventricle. The ultrastructural study suggests that different kinds of supraependymal structures may be related to receptive, secretory and regulatory function, especially, serve as a morphological basis for the new control pathway, i.e., CSP and ependyma, through which the hypothalamus regulates the activity of the anterior lobe of the pituitary gland.

本文用扫描和透射电镜证实在成年大白鼠的第三脑室存在室管膜上神经元样细胞、神经胶质细胞和类组织细胞。神经纤维发自神经元样细胞或自脑室外穿入室腔而来,其末梢内含有清亮囊泡或兼有大颗粒囊泡。室腔內尚有膨大的树突末梢和室管膜细胞的球状小体。上述各种结构与感受、分泌和调节功能有关,并为下丘脑控制垂体机能的另一新途径(经脑脊液和室管膜)提供了形态学依据。

 
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